Four-in-one pain scale



FIG. 1 is a perspective view of an analog scale for measuring pain according to the present invention with the lower analog scale minimally extended;

FIG. 2 is a perspective view thereof, opposite that shown in FIG. 1 with the lower analog scale almost maximally extended;

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a plan view of FIG. 1;

FIG. 5 is an end elevational view thereof;

FIG. 6 is a side elevational view thereof;

FIG. 7 is an end elevational view thereof; and,

FIG. 8 is a side elevational view thereof.

All portions shown in broken lines are environmental and illustrative only, and form no part of the claimed design. 

The ornamental design for an four-in-one pain scale, as shown and described. 